Drainage device for highway bridge

Abstract

The present invention discloses a drainage device for highway bridges, which belongs to the technical field of highway bridges, and comprises a main beam, a telescopic pipe member arranged between two adjacent main beams, a longitudinal drainage hole is opened on the main beam, and the telescopic pipe member is connected with the longitudinal drainage hole; the telescopic pipe member comprises a rigid straight pipe, and two corrugated pipes coaxially arranged at both ends of the rigid straight pipe, the outer end of the corrugated pipe is provided with a connecting plate connected to the main beam, and a plurality of groups of telescopic dampers are arranged between the two connecting plates of the same telescopic pipe member, and the telescopic dampers are evenly distributed in an annular manner on the outer circumference of the telescopic pipe member; an intermediate support is arranged on the outer side of the rigid straight pipe, and a guide rod is fixedly arranged on the intermediate support, and the two ends of the guide rod extend in the longitudinal direction of the main beam. When the device of the present invention encounters the effect of thermal expansion and contraction of the bridge itself or the influence of natural disasters, it can effectively protect the main body of the drainage device from damage, improve the service life of the device, and ensure normal drainage of the device.

Description

Technical Field

[0001] The invention belongs to the technical field of highway bridges, and in particular relates to a drainage device for highway bridges. Background Art

[0002] As a special highway structure that can cross the terrain, highway bridges have become a very important part of traffic development, and drainage facilities are an indispensable part of highway bridges. In order to increase the drainage capacity of the bridge itself, some bridges need to set up drainage devices in the longitudinal direction to adapt to the development of sponge cities. However, due to the effects of thermal expansion and contraction of the bridge itself or the influence of natural disasters, such drainage devices are easily damaged, which seriously affects the life of the bridge. Summary of the invention

[0003] In view of this, an object of the present invention is to provide a drainage device for a highway bridge, which can effectively protect the main body of the drainage device from damage when encountering the effects of thermal expansion and contraction of the bridge itself or the impact of natural disasters, thereby increasing the life of the device and ensuring normal drainage of the device.

[0004] In order to achieve the above object, the present invention provides the following technical solutions:

[0005] The present invention provides a drainage device for a highway bridge, comprising a main beam, a telescopic pipe member arranged between two adjacent main beams, the main beam being provided with a longitudinal drainage hole, the telescopic pipe member being connected to the longitudinal drainage hole; the telescopic pipe member comprising a rigid straight pipe and two corrugated pipes coaxially arranged at both ends of the rigid straight pipe, the outer end of the corrugated pipe being provided with a connecting plate connected to the main beam, a plurality of groups of telescopic dampers being arranged between the two connecting plates of the same telescopic pipe member, the telescopic dampers being evenly distributed in an annular manner on the outer circumference of the telescopic pipe member; an intermediate support being provided on the outer side of the rigid straight pipe, a guide rod being fixedly provided on the intermediate support, the two ends of the guide rod extending in the longitudinal direction of the main beam, an end support being provided on the outer circumferential surface of the connecting plate, a through hole for the guide rod to pass through being provided on the end support, and a blind hole for the guide rod to pass through being provided on the end surface of the main beam.

[0006] Furthermore, the guide rod includes a rubber hollow tube and a damping buffer block arranged in the rubber hollow tube along the axial direction of the rubber hollow tube. The damping buffer blocks are closely arranged in the rubber hollow tube, and the rubber hollow tube can be bent at the gap between the damping buffer blocks.

[0007] Furthermore, a closed damping cavity is formed inside the rubber hollow tube, and the damping buffer block comprises a cylindrical memory alloy block, a cavity is formed inside the memory alloy block, and flow holes penetrating inside and outside are uniformly formed on the wall of the cavity.

[0008] Furthermore, the damping chamber is filled with damping fluid, and both ends of the rubber hollow tube are detachably sealed and connected via end covers.

[0009] Furthermore, an external thread is provided on the outer wall of the guide rod, and a guide hole is provided on the intermediate support for the guide rod to pass through. The distance between the intermediate support and the two end supports can be adjusted by moving the intermediate support axially, and the intermediate support and the guide rod are fixed by bolts.

[0010] Furthermore, springs are sleeved on both ends of the guide rod, a limit plate is fixedly arranged on the guide rod, one end of the spring is connected to the bottom of the blind hole, and the other end is connected to the limit plate.

[0011] Furthermore, the end support includes a center ring seat and a flange seat sleeved on the outside of the center ring seat, a ball is arranged between the center ring seat and the flange seat, the outer surface of the center ring seat and the inner surface of the flange seat respectively form a first ring groove and a second ring groove for the ball to cooperate, and the outer end of the center seat is formed with an annular flange for axial positioning of the flange seat, and the annular flange is pressed against the end of the main beam through the flange seat.

[0012] Furthermore, both ends of the telescopic damper are hinged to the flange seat through a connecting support, a threaded hole is provided on the flange seat, the connecting support includes a connecting column and a connecting ear fixed to one end of the connecting column, the connecting column is threadedly connected to the threaded hole, and the connecting ear is hinged to the telescopic damper.

[0013] Furthermore, the flange seat is evenly distributed with connecting holes in a ring shape, and the connecting holes are connected with self-tapping screws. Limiting rings are integrally formed at both ends of the rigid straight tube, and a limiting groove corresponding to the limiting ring is opened on the inner wall of the corrugated tube. The limiting ring and the limiting groove are sealed by an annular sealing ring.

[0014] The beneficial effects of the present invention are:

[0015] The present invention provides a drainage device for a highway bridge. By opening holes in the main beam along the longitudinal direction and connecting them through telescopic pipe fittings, the traditional radial extrusion method of the pipe fittings can be converted into an axial extrusion method when the main beam expands or contracts, which is more conducive to the contraction adjustment of the pipe fittings and will not affect the structure of the drainage device or the water conduction performance.

[0016] In the device of the present invention, several groups of telescopic dampers are arranged between the two connecting plates of the same telescopic pipe fitting. When relative displacement or rotation occurs between two adjacent main beams, force can be transmitted to the telescopic damper through the end support. Damping and shock absorption are performed by the telescopic damper, thereby reducing damage to the main body of the telescopic pipe fitting. The corrugated pipe itself can also shrink to a certain extent in the later stage, avoiding permanent damage. By arranging a guide rod, the telescopic pipe fitting can be supported to a certain extent. Having a certain rigidity is more conducive to smooth drainage. The depth of the blind hole is greater than the depth of the guide rod inserted into the main beam. By arranging the guide rod to cooperate with the blind hole, a certain degree of guiding effect can be performed.

[0017] Other advantages, objectives and features of the present invention will be described in the following description and will be apparent to those skilled in the art to some extent, or those skilled in the art may be taught from the practice of the present invention. The objectives and other advantages of the present invention may be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to make the purpose, technical solution and beneficial effects of the present invention clearer, the present invention provides the following drawings for illustration:

[0019] Figure 1 It is a structural schematic diagram of the device of the present invention;

[0020] Figure 2 It is a schematic diagram of the arrangement of the damping buffer blocks of the present invention;

[0021] Figure 3 It is a structural schematic diagram of the damping buffer block;

[0022] Figure 4 is a structural schematic diagram of the intermediate support;

[0023] Figure 5 is a structural schematic diagram of the end support;

[0024] Figure 6 is a structural schematic diagram of the connecting support;

[0025] Figure 7 It is a structural schematic diagram of the connecting disk.

[0026] The markings in the accompanying drawings are as follows: main beam 1, telescopic pipe fitting 2, longitudinal drainage hole 3, rigid straight pipe 4, corrugated pipe 5, connecting plate 6, telescopic damper 7, intermediate support 8, guide rod 9, end support 10, through hole 11, blind hole 12, rubber hollow tube 13, damping buffer block 14, memory alloy block 15, flow hole 16, guide hole 17, bolt 18, spring 19, limit plate 20, center ring seat 21, flange seat 22, ball 23, first annular groove 24, second annular groove 25, annular flange 26, connecting support 27, connecting column 28, connecting ear 29, connecting hole 30, self-tapping screw 31, limit ring 32, limit groove 33. DETAILED DESCRIPTION

[0027] like Figures 1-2 As shown, a drainage device for a highway bridge of the present invention comprises a main beam 1 and a telescopic pipe fitting 2 arranged between two adjacent main beams 1. The main beam 1 is rectangular, and each main beam 1 is spliced ​​in sequence along the longitudinal direction. There is a certain interval between two adjacent main beams 1, and the telescopic pipe fitting 2 is arranged in the interval.

[0028] Specifically, a longitudinal drainage hole 3 is opened on the main beam 1, and the longitudinal drainage hole 3 is along the longitudinal direction of the main beam 1. The telescopic pipe fitting 2 is connected with the longitudinal drainage hole 3, and the longitudinal drainage holes 3 of two adjacent main beams 1 are connected through the telescopic pipe fitting 2; the telescopic pipe fitting 2 includes a rigid straight pipe 4 arranged in the center, and also includes two corrugated pipes 5 coaxially arranged at both ends of the rigid straight pipe 4. The corrugated pipe 5 is made of steel corrugated pipe 5, which can be axially extended and retracted to change the length and is not easy to rust. The outer end of the corrugated pipe 5 is provided with a connecting plate 6 connected to the main beam 1, so that a telescopic pipe fitting 2 corresponds to two connecting plates 6, and a plurality of groups of telescopic dampers 7 are arranged between the two connecting plates 6 of the same telescopic pipe fitting 2, and the telescopic dampers 7 are evenly distributed on the outer circumference of the telescopic pipe fitting 2; when relative displacement or rotation occurs between two adjacent main beams 1, the force can be transmitted to the telescopic damper 7 through the end support 10, and damping and shock reduction are performed by the telescopic damper 7.

[0029] In the present invention, an intermediate support 8 is provided on the outer side of the rigid straight tube 4, and there are four intermediate supports 8. A guide rod 9 is fixedly provided on the intermediate support 8, and the fixing method therein can also be a detachable fixing method. Both ends of the guide rod 9 extend along the longitudinal direction of the main beam 1, and an end support 10 is provided on the outer circumferential surface of the connecting plate 6. A through hole 11 for the guide rod 9 to pass through is provided on the end support 10. A blind hole 12 for the guide rod 9 to pass through is provided on the end face of the main beam 1. The depth of the blind hole 12 is greater than the depth of the guide rod 9 inserted into the main beam 1, and its diameter is greater than the diameter of the guide rod 9.

[0030] In this embodiment, the guide rod 9 includes a rubber hollow tube 13 and a damping buffer block 14 arranged in the rubber hollow tube 13 along the axial direction of the rubber hollow tube 13. The rubber hollow tube 13 can be bent, but it is a straight tube under normal circumstances. The damping buffer blocks 14 are closely arranged in the rubber hollow tube 13. The rubber hollow tube 13 can be bent at the gap between the damping buffer blocks 14. When two adjacent main beams 1 are misaligned, it will not cause permanent damage to the guide rod 9, and can be staggered at a suitable position. The deformation of the telescopic pipe 2 is achieved by the deformation of the bellows 5. The inner side of the rubber hollow tube 13 forms a closed damping cavity, such as Figure 3 As shown, the damping buffer block 14 includes a cylindrical memory alloy block 15, a cavity is provided inside the memory alloy block 15, and flow holes 16 are evenly provided on the wall of the cavity, which penetrate inside and outside. The damping cavity is filled with damping liquid, and the two ends of the rubber hollow tube 13 are detachably sealed and connected through end covers. When the memory alloy block 15 is squeezed, it can produce a certain damping effect by itself, and the repeated flow of the damping liquid in the flow hole 16 can also produce a certain damping effect. When the main beams 1 are close to each other, the memory alloy block 15 can be squeezed, which plays a damping buffering role, and at the same time, the main beam 1 is limited to a certain extent, avoiding the damage of the rigid straight tube 4 caused by excessive closeness.

[0031] In this embodiment, an external thread is provided on the outer wall of the guide rod 9, and a guide hole 17 is provided on the intermediate support 8 for the guide rod 9 to pass through. The distance between the intermediate support 8 and the two end supports 10 can be adjusted by moving the intermediate support 8 axially. The intermediate support 8 and the guide rod 9 are fixed by bolts 18. When the left bellows 5 needs to be cleaned, the intermediate support 8 is moved rightward and continuously close to the right end support 10 until the left bellows 5 becomes straight, and the position of the intermediate support 8 is fixed by bolts 18. Under the continuous flushing of running water, the impurities inside the left bellows 5 can be washed clean. Similarly, when the right bellows 5 needs to be cleaned, it is cleaned in the reverse direction, which should be understood by those skilled in the art.

[0032] In this embodiment, springs 19 are sleeved on both ends of the guide rod 9, and a limit plate 20 is fixedly provided on the guide rod 9. One end of the spring 19 is connected to the bottom of the blind hole 12, and the other end is connected to the limit plate 20. By providing the spring 19, a certain restoring effect can be achieved.

[0033] In this embodiment, Figure 7As shown, the end support 10 includes a center ring seat 21 and a flange seat 22 sleeved on the outside of the center ring seat 21. The inner diameter of the flange seat 22 matches the outer diameter of the center ring seat 21. A ball 23 is arranged between the center ring seat 21 and the flange seat 22. The ball 23 is arranged in a ring shape. The outer surface of the center ring seat 21 and the inner surface of the flange seat 22 respectively form a first annular groove 24 and a second annular groove 25 for the ball 23 to cooperate with. The first annular groove 24 and the second annular groove 25 just cooperate to form a space for the ball 23 to roll. The outer end of the center seat is formed with an annular flange 26 for axial positioning of the flange seat 22. The annular flange 26 is pressed against the end of the main beam 1 through the flange seat 22, which is convenient for positioning and installing the center ring seat 21.

[0034] In this embodiment, both ends of the telescopic damper 7 are hinged to the flange seat 22 through the connecting support 27, and the flange seat 22 is provided with threaded holes, such as Figure 6 As shown, the connecting support 27 includes a connecting column 28 and a connecting ear 29 fixed at one end of the connecting column 28. The connecting column 28 is threadedly connected to the threaded hole. By rotating the connecting column 28, its penetration length can be adjusted, thereby fine-tuning the installation length of the telescopic damper 7 to make it more in line with actual installation needs. The connecting ear 29 is hinged to the telescopic damper 7.

[0035] In this embodiment, the flange seat 22 is evenly distributed with connecting holes 30 in an annular pattern, and the connecting holes 30 are connected with self-tapping screws 31. Figure 4 and 5 As shown, both ends of the rigid straight tube 4 are integrally formed with limit rings 32, and the inner wall of the corrugated tube 5 is provided with a limit groove 33 corresponding to the limit ring 32, and the limit ring 32 and the limit groove 33 are sealed by an annular sealing ring.

[0036] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A drainage device for a highway bridge, characterized in that: It comprises a main beam and a telescopic pipe fitting arranged between two adjacent main beams, the main beam being provided with a longitudinal drainage hole, the telescopic pipe fitting being connected with the longitudinal drainage hole; the telescopic pipe fitting comprises a rigid straight pipe and two corrugated pipes coaxially arranged at both ends of the rigid straight pipe, the outer end of the corrugated pipe is provided with a connecting plate connected to the main beam, a plurality of groups of telescopic dampers are arranged between the two connecting plates of the same telescopic pipe fitting, the telescopic dampers are evenly distributed in an annular manner on the outer circumference of the telescopic pipe fitting; an intermediate support is arranged on the outer side of the rigid straight pipe, a guide rod is fixedly arranged on the intermediate support, both ends of the guide rod extend in the longitudinal direction of the main beam, an end support is arranged on the outer circumferential surface of the connecting plate, a through hole is provided on the end support for the guide rod to pass through, and a blind hole is provided on the end surface of the main beam for the guide rod to pass through; the guide rod comprises a rubber hollow The invention relates to a rubber hollow tube, a damping buffer block arranged in the rubber hollow tube along the axial direction of the rubber hollow tube, the damping buffer blocks are closely arranged in the rubber hollow tube, and the rubber hollow tube can be bent at the gap between the damping buffer blocks; a closed damping cavity is formed on the inner side of the rubber hollow tube, the damping buffer block comprises a cylindrical memory alloy block, a cavity is opened on the inner side of the memory alloy block, and flow holes penetrating inside and outside are evenly opened on the wall of the cavity; the damping cavity is filled with damping fluid, and the two ends of the rubber hollow tube are detachably sealed and connected by end covers; an external thread is opened on the outer wall of the guide rod, and a guide hole for the guide rod to pass is opened on the intermediate support, and the distance between the intermediate support and the two end supports can be adjusted by moving the intermediate support along the axial direction, and the intermediate support and the guide rod are fixed by bolts.

2. A drainage device for a highway bridge according to claim 1, characterized in that: Springs are sleeved on both ends of the guide rod, a limiting plate is fixedly arranged on the guide rod, one end of the spring is connected to the bottom of the blind hole, and the other end is connected to the limiting plate.

3. A drainage device for a highway bridge according to any one of claims 1-2, characterized in that: The end support includes a center ring seat and a flange seat sleeved on the outside of the center ring seat, a ball is arranged between the center ring seat and the flange seat, the outer surface of the center ring seat and the inner surface of the flange seat respectively form a first ring groove and a second ring groove for the ball to cooperate, and the outer end of the center seat is formed with an annular flange for axial positioning of the flange seat, and the annular flange is pressed against the end of the main beam through the flange seat.

4. A drainage device for a highway bridge according to claim 3, characterized in that: The two ends of the telescopic damper are hinged to the flange seat through a connecting support, a threaded hole is provided on the flange seat, the connecting support includes a connecting column and a connecting ear fixed at one end of the connecting column, the connecting column is threadedly connected to the threaded hole, and the connecting ear is hinged to the telescopic damper.

5. A drainage device for a highway bridge according to claim 4, characterized in that: The flange seat is evenly distributed with connecting holes in a ring shape, and the connecting holes are connected with self-tapping screws. Limiting rings are integrally formed at both ends of the rigid straight tube, and a limiting groove corresponding to the limiting ring is opened on the inner side wall of the corrugated tube. The limiting ring and the limiting groove are sealed by an annular sealing ring.

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